Leak-alarm for pneumatic tires.



E. I. F. QUIRIN II G. A. PAYNE. LEAK ALARM Foa PNEuMATlc TlREs. APPLICATION FILED IULY 3.1917.

'?. y Patented Aug. 28,1917.

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mm J'. E'. QUEEN', 0F TIOGA CENTER, AND GEGRG-E A. PAYNE, 0F BUFFALO, NEW YORK.

LME-ALARM FOR PNEUMATIC TIR-ES.

Speclcation of Letters Patent.

Patented Aug. 28, ilQil'l.

Application tiled July 3, 1917. Serial No. 178,5i1.

To all 'whom t may concern:

Be it lknown that we, EMIL J. F. QUnuN, a citizen of the United States, resident of* rlioga Center, rlioga county, State oi:D New York, and GEORGE A. PAYNE, a citizen of the United States, resident of Budalo, in the county of Erie and State of New York, have made a certain new and useful Invention in Leakilarms for Pneumatic Tires;

,o and we declare the following to be a full,

clear, and exact description of the same, such as will enable others skilled in the art to which it appertains to make and use the invention, reference being had to the accom- 5 panying drawings, and to letters or figures of reference marked thereon, which form. a part of this specification.

Figure 1 is a side View of a vehicle wheel having the invention (shown in dotted lines) o applied thereto.

Fig. 2 is a section on the line 2-2, Fig. 1. Fig. 3 is a similar view, showing the tire deflated.

Fig. 4f is a detail perspective view of the 5 invention.

i Fig. 5 is a. similar-view ot a modification. Fig. 6 is a similar View oit another modieation.

The invention has relation to a device for e use in connection with pneumatic tires, de-

signed to give notice to the occupant oi an automobile or other vehicle when the tire has become more or less dedated or attened.

'lire invention consists in the novel cons struction and combinations of parts, as hereinafter set forth.

ln the accompanying drawings, illustrat ing the invention, the numeral 2 designates the pneumatic tire, and 3 is the invention,

o consisting preferably of a ball or sphere oi.

ball is prevented from rolling around thel tire when the wheel is in rotation, being maintained in one position therein.

rllhe internal diameter of the tire being four inches, the diameter of the ball would ,be about two inches and the breadth of each wing about one inch.

ln use, should the tire become deated, the rubber ball will cause the wheel to rise each time the ball is brought around therewith 1nto contact withvthe ground or roadbed, causing a jar or bump that will give unmistakable notice that the tire is flat. This notice can be given when the tire becomes one-half f lat, or dat to any other degrec, by increasing the size of the ball and decreasing thewidth of the wings or anges. Amodilication of the invention is shown in Fig. 5 of the drawings, wherein the body ot the plug consists of a solid rubber ball 6, said ball located within a hollow rubber ball 7, the latter having an, internal diameter greater than the diameter of the solid ball. In this case the outer ball fills the air chamber. of th e tire with suiicient closeness to maintain it 1n one position therein when the vehicle wheel is in rotation. Should there be a leak in the tire, and deflation thereof, the resilient walls of the outer ball will yield, end the solid inner ball cause the bump or Jar each time the wheel turns around. A l

y A further modication is shown in llfig. 6, wherein resilient radial projections 8 are provided, upon a spherical body 9.

We claim e l.l A leak alarm for pneumatic tires, conw sisting of a plug designed to be placed in the inner tube or air chamber of the tire,

said'plugA having an inner main member oi across-sectional area less than that of said chamber, and an outer resilient member surrounding the inner member and in engagement with the walls of said chamber. i v

2, A leak alarm tor pneumatic tires, consisting or" a plug designed to be placed in the inner tube or air chamber of the tire, said plug having an inner main member of a cross-sectional area less than that of said chamber, said member having resilient pro- )ect-ions in engagement with the walls ot said chamber.

3. A leak alarm for pneumatic tires, consisting ot a plug designed to be placed in the inner tube or air chamber oi" the tire, said plug having a spherical body oi.I a cross sectional area less than that of said chamber, said body having resilient projections in engagement with the walls of said chamber.

4.. A leak alarm tor pneumatic tires, con

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sisting of a plug ldesigned to be placeclin the inner tube or air chamber of the tire, said plug having a spherical bodyof a cross-sectional aree less than that of said chamber, said body having resilient annular intersecting projections in engagement with the Walls of said chamber.

Loewe? In testimony whereof We aix our signatures, in presence of two Witnesses.

EMIL J. F. QUIRN. GEORGE A. FAYNE. Witnesses:

A. G. VAN NORSTRAN, EDWEN Lnvm. 

